<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商运营平台后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出
      </el-button>
    </el-header>
    <!--页面主体区域-->
    <el-container>
      <!--侧边栏-->
      <el-aside :width="isCollapse ?'64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#333744" text-color="#fff" 
        active-text-color="#409EFF" unique-opened :collapse="isCollapse"
         :collapse-transition="false"  router  :default-active="activePath">
          <!-- 一级菜单 -->
        <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
          <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
         
         <!-- 二级菜单 -->
        <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children"
        :key="subItem.id" @click="saveNavState('/' + subItem.path)"> 
          <template slot="title">
          <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
        </el-menu-item>
        </el-submenu>
      </el-menu>
      </el-aside>
      <!--右侧内容主体-->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
        </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  created(){
    this.getMenuList(),
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  data () {
    return {
      //左侧菜单数据
      menuList:[],
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      isCollapse:false,
      //被激活的链接地址
      activePath:''
    }
  },
methods: {
    logout(){
        window.sessionStorage.clear()
        this.$router.push("/login")
      },
    async getMenuList(){
     const {data:res}  = await this.$http.get('menus')
     if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
     this.menuList = res.data
     console.log(res)
        },
    toggleCollapse(){
      this.isCollapse = !this.isCollapse
    },
    //保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
},
 
}

</script>
<style lang='less' scoped>
  .home-container{
    height: 100%;
  }
  .el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div{
      display: flex;
      align-items: center;
      span{
        margin-left: 15px;
      }
    }
  }
  .el-aside{
    background-color: #333744;
    .el-menu{
      border-right:none ;
    }
  }
  .el-main{
    background-color: #EAEDF1;
  } 
  .iconfont{
    margin-right:10px;
  }
  .toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
</style>